Tag-line clevis.



Patented May 6, 1913;

Witnesses Attorneys.

' view of the clevis. Fig. 2 is .a view JOHN E. 'GILCHRIST, OF SOUTHBEND, WASHINGTON.

TAG-LINE CLEVIS.

Specification of Letters Patent.'

Patented May 6, 1913.

Application filed September 3, 1912. Serial No. 718,312.

' such as used in loggin the principal object of the invention being toprovide a clevis,

the parts of which are connected by a single pm which, while the partsare in activepositions, isheld against longitudinal displacement so thatit becomes impossible for the parts of the clevis to become detachedfrom each other. v

A further object is to provide a clevis the parts of which can so thatnewlines can whenever desired.

A further object is to provide a clevis of this character which .is soconstructed as to be capable of passing through the bull block withoutbecoming strained.

A further object is to provide a clevis which will prevent main and taglines from becoming entangled.

With the foregoing and other objects in View which will appear as thedescription proceeds, the invention resides in the com-- bination andarrangement of parts and in the details of construction hereinafter.described and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, can be made withinthescope of what is claimed, without departing from the spirit! of theinvention.

In the accompanylng drawings the preferred form of the invention hasbeen shown.

In said drawings :Figure 1 is a plan section. and partly in elevation oft e parts of the clevis separated.

Referring to the figures by characters of reference 1 designates aU-shaped clevis member having eyes at the ends thereof, as shown at 2,the inner faces of said eyes being recessed or cut-away as shown at 3 soas to receive eyes 4 formed at the ends of another U-shaped clevismember 5. One of the eyes '2 has a keyway 6 therein while one of theeyes 4 is also provided with a keyway 7. A collar 8 is adapted to befitted between the eyes 4 and has -a keyway 9 therein. L This collar isformed with a stem 10 provided, at its free end, with an eye 11 adaptedto be be readily separatedbe inserted thereinto artly in tion, however,.the few parts embodied in its construction connected to the haul-backswivel of the logging apparatus.

The coupling pin, which has been shown at 12, is inserted into the eyes2, and 4 and into the collar 8 and is provided, at its center, w1th .akey or feather 12, the length of which is equal to the length of thekeyway 9.

It is to be understood that the eyes 2 and 4 always register with eachother and with theopening'in the collar 8. By turning the members 1 and5 out of their normal positions, the keyways 6 and -7 can be broughtinto register with the keyway 9. When the parts are thus located, thepin 12 can be inserted into the registering openings and key or feather12' passed through the keyways 6 and 7 and into the keyway 9. By thenswinging theclevis members 1 and 5 relative to the collar 8, the keyways6 and 7 can be shifted out of register with the keyway 9 so as thusprevent withdrawal of the pin 12. .A main line can be extended throughone of the clevis members and a tag line through the other clevis memberwhile the haul-back swivel is adapted tofbe connected to the eye 11. Itwill be seen that clevis members can be quickly detached by shiftingthem so as to bring the keyways 6 and. 7 into register with the keyway 9whereupon the pin 12 can be withdrawn. Under normal conditions,howeveryas when the clevis is in use, these keyways are out of registerand it thus becomes impossible f0; tlile pin 12 to drop out of place.

t as

been found in actual practice that i a clevis such as-herein describedis of conof connection which consists of a heavy plate having threeopenings therein, one in each end and one in the center, each openingreceiving a clevis for engagement by one of the lines. This oldarrangement results in the lines becoming quickly entangled and, by.reason of the increased number of parts necessary,- the device soongets out of order. The device constituting the present inven isadvantageous because of and because of the further fact that it becomesimpossible for these parts to become separated as long asthe clevis-isin use.

What is claimed is A clevis including opposed members each havingterminal eyes, the, eyes of one member lapping the eyes of the othermember,

a collar insertible between said eyes, one eye of each member having akeyway and there being a keyway in the collar, all 'of said keywaysbeing adapted to register when the clevis members and collar are out.ofnormal position relative to each other, and a pin seated in the eyes andcollar and having a key insertible through the keyways in the eyes andadapted to be seated inthe l0 keyway in the collar, the'length of saidkey being equal to the length of the key- Way in the collar.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two Witnesses.

J OHN E. GILCHRIST.

Witnesses:

H.- A. HILL, 0. A. STOPPELMAN.

